Plugin-Test2-2010 - CHEMISTRY 1E03 12 NOVEMBER 2010 Instructor J Barbier MCMASTER UNIVERSITY TERM TEST 2 DURATION 120 minutes This test contains 17

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Version 1 Page 1 CHEMISTRY 1E03 12 NOVEMBER 2010 Instructor: J. Barbier MCMASTER UNIVERSITY - TERM TEST # 2 - DURATION: 120 minutes This test contains 17 pages and 30 multiple-choice questions . The last pages include extra blank pages for rough work, a page with some useful data and equations, and a Periodic Table. You may tear off the last five pages. You are responsible for ensuring that your copy of the question paper is complete . Bring any discrepancy to the attention of your invigilator. Questions 1-25 are each worth 2 marks, questions 26–30 are each worth 3 marks. There is no penalty for incorrect answers. Answer all questions on the answer sheet, in pencil . Instructions for entering multiple-choice answers are given on page 2. Select one answer only for each question. These question sheets must be returned with your answer sheet. However, no work written on the question sheets will be marked . You must enter your full name and student number on this question sheet, as well as on the answer sheet. Your invigilator will be checking your student card for identification. Make sure to enter the correct version number of your test (shown at the bottom of each page) in the correct column on the answer sheet (see instructions on page 2). Only Casio FX 991 electronic calculators may be used; but they must NOT be transferred between students. Use of periodic tables or any aids other than those provided, is not allowed. 1. Note: Academic dishonesty may include, among other actions, communication of any kind (verbal, visual, etc.) between students, sharing of materials between students, copying or looking at other students’ work. If a problem arises, please ask an invigilator to deal with it for you.
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Page 2 QUESTIONS 1–25 ARE WORTH 2 MARKS EACH. 1. Select the set of quantum numbers ( n, l, m l , m s ) that correctly describes one of the highest- energy electrons in the ground state of indium (In) . A) 5 ,0, 0, +½ B) 5, 2, 1, +½ C) 5, 2, -1, -½ D) 5, 1, 2, +½ E) 5, 1, 0, -½ 2. Use a Born-Haber cycle to calculate the lattice energy of NaBr(s) from the data below. (Note that bromine is liquid in its standard state.) nthalpy of sublimation of Na(s) = +177.8 kJ/mol First ionization energy of Na = +495.9 kJ/mol Bond energy (Br Br) = +192.5 kJ/mol Electron affinity of Br = 325 kJ/mol Enthalpy of formation of NaBr(s) = 361.1 kJ/mol Enthalpy of vaporization of Br 2 (l) = +30.9 kJ/mol A) 821 kJ/mol B) 450 kJ/mol C) 1456 kJ/mol D) 709 kJ/mol E) 806 kJ/mol 3. Consider the following reaction at equilibrium: 2 SO 2 (g) + O 2 (g) 2 SO 3 (g), with rxn = 198 kJ/mol. If the volume of the system is decreased at constant temperature, what change will occur in the position of the equilibrium? A)
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This note was uploaded on 10/24/2011 for the course ECON 1e03 taught by Professor As during the Spring '11 term at Adventista de las Antillas.

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Plugin-Test2-2010 - CHEMISTRY 1E03 12 NOVEMBER 2010 Instructor J Barbier MCMASTER UNIVERSITY TERM TEST 2 DURATION 120 minutes This test contains 17

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